Ogre::D3D11CompatBufferInterface Class Reference

In D3D11, const buffers can't be bound by offset. More...

#include <OgreD3D11CompatBufferInterface.h>

Inheritance diagram for Ogre::D3D11CompatBufferInterface:

Public Member Functions
	D3D11CompatBufferInterface (size_t vboPoolIdx, ID3D11Buffer *d3dBuffer, D3D11Device &device)
	~D3D11CompatBufferInterface ()
virtual void	_notifyBuffer (BufferPacked *buffer)
virtual void	advanceFrame (void)
ID3D11Buffer *	getVboName (void) const
size_t	getVboPoolIndex (void)
virtual void *RESTRICT_ALIAS_RETURN	map (size_t elementStart, size_t elementCount, MappingState prevMappingState, bool advanceFrame=true)
virtual void	regressFrame (void)
virtual void	unmap (UnmapOptions unmapOption, size_t flushStartElem=0, size_t flushSizeElem=0)
void	upload (const void *data, size_t elementStart, size_t elementCount)

Detailed Description

In D3D11, const buffers can't be bound by offset.

Their size at creation defines the size to be bound to the shader, and the max limit is 64kb. This is unless we're using D3D11.1 on Windows 8.1; which for simplicity we treat it the same as D3D11.

This limitation prevents us from allocating 3x size for triple buffering.

Therefore we need the traditional scheme of mapping with NO_OVERWRITE and then use DISCARD when we've filled the buffer.

In D3D11.0, only index and vertex buffers can be mapped with NO_OVERWRITE. That leaves only DISCARD to be used on those systems. NO_OVERWRITE is used if used D3D 11.1 though.

This buffer interface is for compatibility with these systems.

Constructor & Destructor Documentation

D3D11CompatBufferInterface()

Ogre::D3D11CompatBufferInterface::D3D11CompatBufferInterface	(	size_t	vboPoolIdx,
		ID3D11Buffer *	d3dBuffer,
		D3D11Device &	device
	)

~D3D11CompatBufferInterface()

Ogre::D3D11CompatBufferInterface::~D3D11CompatBufferInterface

(

)

Member Function Documentation

_notifyBuffer()

virtual void Ogre::BufferInterface::_notifyBuffer ( BufferPacked *  buffer )

inlinevirtualinherited

Reimplemented in Ogre::NULLBufferInterface.

advanceFrame()

virtual void Ogre::D3D11CompatBufferInterface::advanceFrame ( void  )

virtual

Implements Ogre::BufferInterface.

getVboName()

ID3D11Buffer * Ogre::D3D11BufferInterfaceBase::getVboName ( void  ) const

inlineinherited

getVboPoolIndex()

size_t Ogre::D3D11BufferInterfaceBase::getVboPoolIndex ( void  )

inlineinherited

map()

virtual void *RESTRICT_ALIAS_RETURN Ogre::D3D11CompatBufferInterface::map ( size_t  elementStart, size_t  elementCount, MappingState  prevMappingState, bool  advanceFrame = true  )

virtual

Implements Ogre::BufferInterface.

regressFrame()

virtual void Ogre::D3D11CompatBufferInterface::regressFrame ( void  )

virtual

Implements Ogre::BufferInterface.

unmap()

virtual void Ogre::D3D11CompatBufferInterface::unmap ( UnmapOptions  unmapOption, size_t  flushStartElem = 0, size_t  flushSizeElem = 0  )

virtual

Implements Ogre::BufferInterface.

upload()

void Ogre::BufferInterface::upload ( const void *  data, size_t  elementStart, size_t  elementCount  )

inherited

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The documentation for this class was generated from the following file:

• OgreD3D11CompatBufferInterface.h